Question

Bookworm bookstore offers books for $14. Or you could join their Star Readers club which is $80 to join and then only $8 a book.

Answer 1

Bookworm:

y = 14x

Star Readers:

y = 80 + 8x

IF you want to see when you pay the same amount, then we set up a system of equations:

14x = 80 + 8x

6x = 80

x = 40/3, so when you buy 13 or less books is the Bookworm bookstore better. Star Readers is better when you have 14 or more books.